20439800122 has 32 divisors (see below), whose sum is σ = 35863171200. Its totient is φ = 8733352320.

The previous prime is 20439800119. The next prime is 20439800123. The reversal of 20439800122 is 22100893402.

It is a super-3 number, since 3×20439800122³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (20439800123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 182058 + ... + 272074.

It is an arithmetic number, because the mean of its divisors is an integer number (1120724100).

Almost surely, 2^20439800122 is an apocalyptic number.

20439800122 is a deficient number, since it is larger than the sum of its proper divisors (15423371078).

20439800122 is an equidigital number, since it uses as much as digits as its factorization.

20439800122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90371 (or 90357 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 31.

The spelling of 20439800122 in words is "twenty billion, four hundred thirty-nine million, eight hundred thousand, one hundred twenty-two".